Tanking and interior damp proofing. Damp Proofing A common cause to your rising damp is due to the exterior ground level being to high thus breaching your dpc. This work is labour intensive and requires extreme care not to damage any hidden pipes etc. Choosing a professional contractor with staff who take pride in what they do it key to a stress free tanking experience. Skills Posted on December 8, 2015 ← Damp Proofing in progress. Waterproofing of parapet walls. →